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【英文标准名称】:StandardPracticeforPolarizedLightDetectionofFlawsinAerospaceTransparencyHeatingElements
【原文标准名称】:航空航天用透明加热元件中裂纹的偏振光检测标准实施规范
【标准号】:ASTMF319-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:F07.08
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:coatings;conductivecoatings;heatingelements;polarizedlight;polarizedlightinspection;Aerospacetransparentenclosures;Conductanceandconductivity(electrical);Flawdetection;Nondestructiveevaluation(NDE)--nonmetallicmaterials;Polarized
【摘要】:Thispracticeisusefulasascreeningbasisforacceptanceorrejectionoftransparenciesduringmanufacturingsothatunitswithidentifiableflawswillnotbecarriedtofinalinspectionforrejectionatthattime.Thispracticemayalsobeemployedasago-nogotechniqueforacceptanceorrejectionofthefinishedproduct.Thispracticeissimple,inexpensive,andeffective.Flawsidentifiedbythispractice,aswithotheropticalmethods,arelimitedtothosethatproducetemperaturegradientswhenelectricallypowered.Anyothertypeofflaw,suchasminorscratchesparalleltothedirectionofelectricalflow,arenotdetectable.1.1Thispracticecoversastandardprocedurefordetectingflawsintheconductivecoating(heaterelement)bytheobservationofpolarizedlightpatterns.1.2Thispracticeappliestocoatingsonsurfacesofmonolithictransparenciesaswellastocoatingsimbeddedinlaminatedstructures.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.ForspecificprecautionarystatementsseeSection6.
【中国标准分类号】:V04
【国际标准分类号】:49_060
【页数】:4P.;A4
【正文语种】:英语